All-digital control photovoltaic module simulator and control method thereof

An analog device, technology for controlling light

Active Publication Date: 2014-09-24
YANGZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The problem of adopting this structure is: 1. The working condition of the system in the case of open circuit and short circuit is not considered to take corresponding control and protection measures; 2. There is no control function for output overcurrent and overvoltage in the transient state of load mutation

Method used

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  • All-digital control photovoltaic module simulator and control method thereof
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  • All-digital control photovoltaic module simulator and control method thereof

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Embodiment Construction

[0027] Such as Figure 1-2A fully digital control photovoltaic module simulation device is shown, the simulation device includes a main circuit and a control circuit; the main circuit includes a third filter capacitor C3, an output capacitor C4, an input voltage acquisition circuit, a synchronous step-down converter, Current measurement and conditioning circuit, output voltage acquisition circuit, overvoltage protection switch tube Q3 and overcurrent protection switch tube Q4, the positive pole of the input terminal of the synchronous step-down converter is connected to the input power supply, and the negative pole is grounded, and the input terminal of the synchronous step-down converter is positive The filter capacitor C3 and the input voltage sampling circuit are connected between the negative poles, the output voltage acquisition circuit, the output capacitor C4 and the overvoltage protection switch tube Q3 are connected between the positive and negative poles of the output...

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Abstract

The invention discloses an all-digital control photovoltaic module simulator and a control method of the all-digital control photovoltaic module simulator. The all-digital control photovoltaic module simulator comprises a main circuit, a control circuit, a digital signal controller dsPIC33FJ64GS606 and an auxiliary power supply. The main circuit mainly comprises a synchronous buck converter and an overcurrent and overvoltage protection circuit. The control circuit comprises a current measuring and conditioning circuit, a voltage measuring and conditioning circuit and an MOSFET driving circuit. The all-digital control photovoltaic module simulator and the control method of the all-digital control photovoltaic module simulator solve the working condition problems of short circuit and open circuit of a system and the problems of load sudden change transient overcurrent and overvoltage, improve reliability and safety of the working process of the circuits, prolong the service life of the circuits, lower maintenance cost, and can be used for simulating a solar panel.

Description

technical field [0001] The invention relates to a photovoltaic battery, in particular to a photovoltaic battery simulation device. Background technique [0002] A document about a solar analog power supply is disclosed in the prior art, the title of the article is: "Research on Novel Digital Photovoltaic Array Simulator", the title of the journal is: International Conference on Intelligent Computation Technology and Automation, date of publication: May 2010, specific chapters Location: vol. 2, pp. 1077-1080 , Authors: Z.Housheng and Z. Yanlei. This paper adopts BUCK converter for analog power supply design, adopts digital control method and quadratic polynomial fitting algorithm. The problem of adopting this structure is: 1. The working condition of the system in the case of open circuit and short circuit is not considered to take corresponding control and protection measures; 2. There is no control function for output overcurrent and overvoltage in the transient state of lo...

Claims

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Application Information

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IPC IPC(8): H02M3/155H02M1/32
Inventor 蒋伟王树人
Owner YANGZHOU UNIV
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